frontend/src/components/common/Home.vue

<template>
    <div class="wrapper">
        <v-head></v-head>
        <!-- <v-sidebar></v-sidebar> -->
        <div class="content-box">
            <v-tags></v-tags>
            <div class="content">
                <transition name="move" mode="out-in">
                    <keep-alive :include="tagsList">
                        <router-view></router-view>
                    </keep-alive>
                </transition>
                <el-backtop target=".content"></el-backtop>
            </div>
        </div>
    </div>
</template>

<script>
import vHead from './Header.vue';
//import vSidebar from './Sidebar.vue';
import vTags from './Tags.vue';
import bus from './bus';
export default {
    data() {
        return {
            tagsList: [],
            collapse: false
        };
    },
    components: {
        vHead,
        //vSidebar,
        vTags
    },
    created() {
        bus.$on('collapse-content', (msg) => {
            this.collapse = msg;
        });

        // 只有在标签页列表里的页面才使用keep-alive，即关闭标签之后就不保存到内存中了。
        bus.$on('tags', (msg) => {
            let arr = [];
            for (let i = 0, len = msg.length; i < len; i++) {
                msg[i].name && arr.push(msg[i].name);
            }
            this.tagsList = arr;
        });
    }
};
</script>
<style lang="less">
.content-box {
    position: absolute;
    left: 0px;
    right: 0;
    top: 70px;
    bottom: 0;
    //padding-bottom: 30px;
    -webkit-transition: left 0.3s ease-in-out;
    transition: left 0.3s ease-in-out;
    background: @background-color-base;
    .content {
        width: 100%;
        height: calc(100% - 48px);
        padding: 10px;
        overflow-y: auto;
        box-sizing: border-box;
    }
}
</style>